Drupal-module-feeds is a project mainly written in PHP and JAVASCRIPT, it's free.
$Id: README.txt,v 1.35 2010/09/18 00:40:43 alexb Exp $
"It feeds"
An import and aggregation framework for Drupal. http://drupal.org/project/feeds
Feeds ships with three feature modules that can be enabled on admin/build/modules or - if you are using Features - on admin/build/features. http://drupal.org/project/features
The purpose of these modules is to provide a quick start for using Feeds. You can either use them out of the box as they come or you can take them as samples to learn how to build import or aggregation functionality with Feeds.
The feature modules merely contain sets of configurations using Feeds and in some cases the modules Node, Views or Data. If the default configurations do not fit your use case you can change them on the respective configuration pages for Feeds, Node, Views or Data.
Here is a description of the provided feature modules:
This feature is a news aggregator. It provides a content type "Feed" that can be used to subscribe to RSS or Atom feeds. Every item on such a feed is aggregated as a node of the type "Feed item", also provided by the module.
What's neat about Feeds News is that it comes with a configured View that shows a list of news items with every feed on the feed node's "View items" tab. It also comes with an OPML importer filter that can be accessed under /import.
This feature is very similar to Feeds News. The big difference is that instead of aggregating a node for every item on a feed, it creates a database record in a single table, thus significantly improving performance. This approach especially starts to save resources when many items are being aggregated and expired (= deleted) on a site.
This feature is an example illustrating Feeds' import capabilities. It contains a node importer and a user importer that can be accessed under /import. Both accept CSV or TSV files as imports.
Feeds supports the PubSubHubbub publish/subscribe protocol. Follow these steps to set it up for your site. http://code.google.com/p/pubsubhubbub/
If you are using Libraries module, you can place external libraries in the Libraries module's search path (for instance sites/all/libraries. The only external library used at the moment is SimplePie.
Libraries found in the libraries search path are preferred over libraries in feeds/libraries/.
If you plan to store files with Feeds - for instance when storing podcasts or images from syndication feeds - it is recommended to enable the Transliteration module to avoid issues with non-ASCII characters in file names. http://drupal.org/project/transliteration
See "The developer's guide to Feeds": http://drupal.org/node/622700
See "The developer's guide to Feeds": http://drupal.org/node/622700
Set the Drupal variable 'feedsdebug' to TRUE (i. e. using drush). This will create a file /tmp/feeds[my_site_location].log. Use "tail -f" on the command line to get a live view of debug output.
Note: at the moment, only PubSubHubbub related actions are logged.
See "The site builder's guide to Feeds": http://drupal.org/node/622698
Hidden settings are variables that you can define by adding them to the $conf array in your settings.php file.
Name: feedsdebug Default: FALSE Description: Set to TRUE for enabling debug output to /DRUPALTMPDIR/feeds[sitename].log
Name: feeds_importer_class Default: 'FeedsImporter' Description: The class to use for importing feeds.
Name: feeds_source_class Default: 'FeedsSource' Description: The class to use for handling feed sources.
Name: feeds_worker_time Default: 15 Description: Execution time for a queue worker, only effective if used with drupal_queue.
Name: feedsdata$importer_id Default: feedsdata$importer_id Description: The table used by FeedsDataProcessor to store feed items. Usually a FeedsDataProcessor builds a table name from a prefix (feedsdata) and the importer's id ($importer_id). This default table name can be overridden by defining a variable with the same name.
Name: feeds_node_batch_size Default: 50 The number of nodes feed node processor creates or deletes in one page load.
Name: http_request_timeout Default: 15 Description: Timeout in seconds to wait for an HTTP get request to finish.
See "Feeds glossary": http://drupal.org/node/622710